Cam-shaft-bushing inserter and extractor



R. A. HALL.

CAM SHAFT BUSHING INSERTER ANDEXTRACTOR. APPLICATION FILED JULY 13.1920.

1,369,172.. Patented Feb. 22,1921,

INVENTOR. Hey i ffa/zi ATTORNEY.

, UNITED STATES PATENT OFFICE.

30y ALBERT HALL, or LANCASTER,PENNSLYVANI Ar CAM-SHAFT-BUSHIN'G INSERTER AND iEXTRACTOIti.

provision of a simple and inexpensive tool for easily and quickly inserting. or removing a cam shaft bushing,-such as the rear bushing for the cam shaft in a Ford motor which is extremely diflicult of access and is positioned within the base or crank case of the motor. J

A further object of the invention isthe provision of a tool adapted for engaging any removable bushing which cannot be readily driven in or out by reason of its inaccessible position, the device being readilyengaged with the bushin even when positioned where it is impossible to drive the bushing or engage the same by the hands of the operator. g

A still further object of the invention is to provide arepair tool for manipulating bushings and the like and being capable of longitudinal movement in either direction, while rotary movement thereof is readily prevented. r

With these general objects in view and others thatwill appear as the nature of the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed. V

In the drawing, wherein like reference characters indicate throughout the several views,

Figure 1 is a sectional view through the crank case of a motor illustrating the employment of my device during the extrac-- tion of the bushing from the rear bearing of a camshaft,

Fig. 2 is a similar View showin the reverse operation of inserting the bus ing for the rear bearing of the cam shaft,

Fig. 3 is a view partly in elevation and partly in section during the insertion of the tool through the rear bushing,

Fig. 4'is an enlarged elevational vlew of the bushing engaging end of the device,

Specification -of Letters Patent. I Patented F elm 22, Applicationfiled July 13, 1926. Serial No. 395,983.

corresponding parts Fig. 5 is an elevational view cent side thereof, and I Fig, 6 is an endelevation of the bushing engaglng end oithe tool. Y 7

Referring more in detail to the drawing, I have illustrated my bushing inserter and remoyer 1n connection with a portion 10 of the crank case of an explosivemotor' "in.

of an adja which a plurality-of bearin'gsl'l, 12 and 13. l

are providedin axial alinement with each other for journaling the cam shaft ofthe motor, it being understood that a bushingsuch as 14 is provided in the bore 15 of each journal with the shaft, not shown, mounted for turning in the said bushings.

- The rear bearing 13 is extremely difficult to reach in most motors even when the bottom.

moved and my toolisjjespecially serviceable inremoving aswell as inserting sxicha'buShshank is bifurcated or longitudinally slotted as at 19 forming, bifurcations or arm's 20, sllghtly. resilient and normally positioned divergent.

.A head uponthe bifurcated entree the plate of the base or the'crankcase-is re tool is in the form of a semi-circular flange 21 at the free end of 'eachjarm' 20 having a beveled arcuate outer face 22 with a s emi circular flat end 23. Whejn-jthe bushings have been removed'from the bearings 11 and 12, the shank 16 is longitudinally projected through said bearings and the head members 21 forced with their beveled faces 22 against the adjacent open end of the inner bushing 14, it being apparent that upon driving the arms 20 through the bushing 14, the arms 20 will be drawn toward each other. When the flanges 21 emerge from the opposite end of the bushing 14, the arms 20 spread apart by reason of their resiliency, engaging the bushing 14 rearwardly of the flanges 21 as illustrated in Fig. 1 of the drawing.

A guard 24 upon the shank -16 rests 7 against theadjaoentside 25 of the motor 10 while the nut 18 bearing upon the outer flanged end 26 of the guard 24 may be turned upon the screw threads 17 for forcmoved from the bearing 13 in this manner and any convenlent expedlent may be employed for preventing the shank 16 trom' turning it required such as a wedge or stop bar 26 forced through the some and engaging the adjacent wall of the motor 10.'

The introduction of the shank 16 throughz the bushingv 1 1 is illustrated in 3 and the extracting operation in Fig. 1 of the drawing while Fig. 2 illustrates a manner in'which the bushing 14 may; be inserted into the rear bearing 13. The flanges 21 or head of the tool is engaged with the adjacent inner end of the bushing 1d andfthe stop bar 26-plaeed inthe slot 19 to maintainthe arms 20 substantially expanded to prevent the head from-entering the bush,-' ing 14:. The guard 24; isplaced upon the,

threaded portion of the] shank l7 inwardly of the bearing 11 with the nut 18 inwardly of. the guard 2d and upon turning the nut 18 in the required direction, the shank 16 will be forced inwardly pushing the-bushj ing 14; into the bore 15 of the inner bearing 13.

such as the holding of the outer threaded end 17 of the, shank against rotation inany convenient manner. I

i The, complete operation of the invention will be fully understood from this detailed description thereof, and while the form of the invention herein set forth is vbelieved preferable,v it will be understood that changes may be made-therein vithout departing from the spirit and scope ofthe in? venti'on as claimed.

What is claimed as new is:- j v 1, In comb nation, a bushingapphance comprising a shank bifurcated at one end forming resilient spaced arms and threaded at its opposite end arouate flanges at the free ends of the arms adapted for engaging the open end of a bushing during the introduction of the shank into the bushing and the passing of the flanged end therethrou'gh, an adjustable retracting means upon the threaded end of the shank; and rotation preventing means adapted for wedging positioning between the arms whereby a bush ing is locked uponthe arms inwardly'ott the flanges thereof. I

2. bushing device comprising a shank having a bifurcated end with terminal arouate flanges outwardlv beveled to-the semin t I 'clroular flat ends or the arms, a bearing guard adjustably mounted on the shanin an adjusting nut threaded upon the shank ontwardlyot"the guard; anda locking wedge positioned between the arms when the devioe is in use adapted for preventing rota- 1on of the shank durlng the longitudinal movement thereof.

.7 3. A device for moving rear bushings of a cam shaft comprising an elongated shank having one endportion threaded land a longitudinal slot in the other end of the shank providing spaced resilient arms normally' arranged divergent and terminating in semi-eircular'endfaces, 'arcuate flanges at the free ends of the arms beveled" to; ward said warms-an adjusting nut upon the threaded portion'ot the shank, a bearing member upon the shank in contact with said nut during operation, and rotation preventing neans for: the shank wedged between said resilient arms whereby said flanges are permitted to o'peratively engage a bushing during the bushing inserting or extracting operation of the device. r In testimony whereof I aflix my signature.

; :ROY ALBERT HALL. 

